The difference between us, Truths, is that I used Efudex-stronger than Carac and applied it twice a day for 14. Therefore I had 28 applications within that 2 week period (27 actually because on day 12 I skipped the nightime dose...ahhh I needed the break :)).
My guess is that this week you will notice more reaction. Keep the aquaphor handy and like Whitey said...wait three hours.
Good luck!!
(if i ever have to do this again I'm going to try the Carac as my derm said that you don't get quite as red).